Vending machine



VENDING MACHINE 4 Sheets-Sheet 1 Filed Aug. 23, 1961 FIG. I.

MAM. w. filo-46M, Jm 7. 5%,

W3 65 m 5 M Gm April 16, 1963 A. W. HOLSTEIN ETAL VENDING MACHINE FiledAug. 23, 1961 4 Sheets-Sheet 2 April 1963 A. w. HOLSTEIN ETAL 3,085,711

VENDING MACHINE 4 Sheets-Sheet 3 Filed Aug. 23, 1961 April 1963 A. w.HOLSTEIN ETAL 3,085,711

VENDING MACHINE 4 Sheets-Sheet 4 Filed Aug. 23, 1961 United StatesPatent Ofi 3,085,711 Patented Apr. 16,1963

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3,085,711 VENDING MACHINE Alvin W. Holstein, Brentwood, and James T.Schuller, St. Anns, Mo., assignors to National Vendors, Inc., St. Louis,Mo., a corporation of Missouri Filed Aug. 23, 1961, Ser. No. 133,468 15Claims. (til. 221-75) This invention relates to vending machines, andmore particularly to a vending machine for vending articles such aspackaged items (candy bars, for example).

Among the several objects of this invention may be noted the provisionof a vending machine of the class described which is adapted to operateon the so-called first-in, first-out principle, i.e., items first put inthe machine are the first to be vended, to avoid items remaining for along time in the machine and becoming stale; the provision of a vendingmachine such as described Which has a relatively high capacity for itssize, and which is relatively easy to load, with loading inherentlyresulting in first-in, first-out operation; and the pro vision of avending machine such as described which is economical to manufacture andreliable in operation. Other objects and features will be in partapparent and in part pointed out hereinafter.

The invention accordingly comprises the constructions hereinafterdescribed, the scope of the invention being indicated in the followingclaims.

In the accompanying drawings, in which one of various possibleembodiments of the invention is illustrated,

FIG. 1 is a front elevation of a vending machine of this invention;

FIG. 2 is a vertical section taken on line 22 of FIG. 1:.

FIG. 3 is an enlarged horizontal section taken on line 3--'3 of FIG. 2;

FIG. 4 is a vertical section taken on line 4-4 of FIG.

FIG. 5 is an enlarged fragment of FIG. 2 showing certain shelves swungdown; and V FIG. 6 is a wiring diagram.

Corresponding reference characters indicate corresponding partsthroughout the several views of the drawings.

Referring to the drawings, a vending machine of this invention is shownto comprise a cabinet generally designated 1 standing on legs 3. Thecabinet has a bottom wall 5, left and right side walls 7 and 8, a topwall 9, a rear wall 11, and a front door 13. The latter is shown ashinged at the left as indicated at 15. Within the cabinet, there are aplurality of shelves, each generally designated 17. Ten shelves areshown, but this number is arbitrary. Each shelf is of rectangular shapeand extends across the cabinet from near one side of the cabinet to nearthe other side. Each shelf comprises a sheet metal plate which is formedto have a trough 19 extending lengthwise thereof from one end of theshelf to the other. Each shelf carries a helix 21 extending lengthwisein the trough. This helix may consist of an open-pitch coil spring. Thediameter of the helix is greater than the depth of the trough and thehelix projects up out of the trough whereby items A to be vended (suchas candy bars or packages of candy) may be placed between theconvolutions of the helix with end portions of the items resting on theshelf at opposite sides of the trough. Means generally indicated at 23is provided for rotating each helix in such direction as to feed theitems, by the screw action of the helix, in the direction toward one endof the shelf (the right end as viewed in FIGS. 1 and 3). This end of theshelf is referred to as the discharge end of the shelf. The helixextends to the discharge end of the shelf so that it is adapted to feeditems one-by-one off the discharge end of the shelf.

-to a pan 81 where it is accessible to a purchaser through an accessopening 83in the front door 13.

Extending vertically at the rear of the cabinet (on the inside of therear Wall 11 of the cabinet) is a pair of angle irons 25. Each of thesehas one leg secured to the rear wall (as by welding) and one legextending forward. The forwardly extending legs of these angle irons areprovided with a vertical series of holes 27. Each shelf has a pair ofretractable hinge pins 29 receivable in a respective pair of the holes27 for pivotally mounting the shelf for swinging movement on ahorizontal axis at the rear of the shelf and at the rear of the cabinet,the shelf thereby being swingable from a generally horizontal vendingposition (see FIG. 2) to a loading position (see FIG. 5) inclineddownward toward the front of the cabinet. As shown in FIG. 3, hinge pins29 are slidable lengthwise relative to the shelf in eyes 31 on theshelf, and are biased outward by springs '33. Each hinge pin has aforwardly extending handle portion 35, the handle portions of the twopins being positioned for being squeezed together against the bias ofsprings 33 for retracting the pins. Each shelf also has a stop such asindicated at 87 for limiting the swing of the shelf by engagement of thestop with the rear wall of the cabinet.

Means is provided for releasably holding each shelf in its generallyhorizontal vending position. As shown, this means comprises a pair ofchannel-section members 41 extending heightwise in the cabinet at thesides and toward the front thereof. These are arranged with their sideflanges 43 and 45 extending rearward, and have their outer side flanges43 secured to the side walls of the cabinet. Their inner edges aretoothed as indicated at 47. Each shelf has latch members 4? pivoted asindicated at 51 underneath the shelf at the front corners of the shelfengageable with the teeth 47 to hold the shelf up in vending position,and swingable out of engagement with the teeth to allow the shelf toswing down.

Each shelf also has guides such as indicated at 53 on opposite sides ofthe respective helix for confinement of items endwise of the items Whilepermitting the items to slide toward the discharge end of the shelf. Asshown, each guide is an angle-section member. Pins 55 received in holes57 in the shelf hold the guides in position. Series of holes 57 areprovided for adjustment of the guides toward and away from the helix forendwise confinement of items of different length.

The means for driving the helix of each shelf comprises a speed-reducinggear box 61 mounted on the other end (the left end as hereinillustrated) of the shelf from the discharge end of the shelf carryingan electric motor, generically designated by the letter M, coupled tothe input of the gear box. The output shaft 63 of the gear box has acylindric hub 65 thereon. One end (the left end) of the helix (which asherein illustrated is constituted by a coil spring) has a number ofclose-pitch coil-s as indicated at 67 and an inturned end at 69extending into a hole in the hub. On the outer end of the output shaft63 of the gear box is a cam 71 comprising a disk having a singleperipheral notch 73 (see FIG. 4). This is engageable by the actuatingarm 75 of a so-called singlerevolution switch generically designated bythe letters CS mounted on the gear box. I v

The discharge ends of the shelves are sufiiciently spaced from the rgihtside wall ofthe cabinet to provide a space 77 through which itemsdischarged from the shelves may drop. An item discharged from any shelfdrops down through this space and is directed by a curved guide 79Referring now to the'w-iringdiagram of FIG. 6, the electric motors forfour of the shelves are shown and specially designated'Ml, M2, M3 andM4. The camoperated switches associated with these motors are speciallydesignated CS1, CS2, CS3 and CS4. The motors and switches for only fourshelves are shown to simplify the wiring diagram. At 85 is indicated acoin mechanism. This is shown in FIGS. 1-3 as pivotally mounted at 87 atthe right of the cabinet (although this is not essential). This coinmechanism includes an electric motor 89 adapted to drive a cam 91 via aspeed-reducing gear box (not specifically shown). Cam 91 comprises adisk having a single peripheral notch 93. It is engageable by theactuating arm 95 of a switch 97 and also by the actuating arm 99 of aswitch 101. On energization of motor '89, cam 91 is driven at 60 r.p.m.,for example, whereas on energization of any motor M1, M2, etc., therespective cam '71 (and the respective helix) are driven at 33 rpm, forexample. The coin mechanism also includes three solenoid-controlledswitches LS, MS and HS for three-price operation, LS being a low-priceswitch, MS being a medium-price switch and HS being a highprice switch.The solenoid for controlling these switches is indicated at 103. SwitchLS is closed on insertion of coin in the amount of the low price.Switches LS and MS are closed on insertion of coin in the amount of themedium price. All three switches LS, MS and HS are closed on insertionof coin in the amount of the high price. Any one or two or all three ofthese switches are opened on energization of solenoid 103.

FIG. 6 also shows a plurality of purchaser-operable switches genericallydesignated by the letter PS and specifically designated PS1, PS2, PS3and PS4, each related to a respective shelf. These purchaser-operableswitches are normally open double-pole push button switches, each beingshown as having two blades 105 and 107 adapted to close on two contacts109 and 111. They are mounted in a horizontal row on the front door 13of the cabinet (see'FIGS. l and 2) with suitable displays such asindicated at 113 thereabove to indicate the type of item obtainable fromthe respective shelves. Three solenoid-controlled switches 115, 117 and119 are provided. The solenoid for controlling these switches isindicated at 121. These switches are normally open, and closed onenergization of solenoid 121. The latter also constitutes a latchingsolenoid for the push-button switches PS, adapted when energized tolatch any switch PS pushed in by a purchaser in closed position, andwhen deenergized to release the switch. For each shelf, there is adouble-throw empty switch generally designated by the letters ES. Thefour empty switches shown in FIG. 6 are specifically designated BS1,BS2, E53 and E54. Each empty switch is mounted underneath the respectiveshelf adjacent the discharge end of the shelf with its actuating arm 123extending up through a slot 125 in the shelf for engagement by an itemon the shelf. Arm 123 is normally held down by an item, but, when thelast item is discharged, arm 123 springs up. Each empty switch has ablade 127 and two contacts 129 and 131. When arm 123 is down, blade 217is closed on contact 129. When arm 123 is up, blade 127 is closed oncontact 131.

Motors M1, M2, M3 and M4 are shown in FIG. 6 as connected across powerlines L1 and L2 in circuits as indicated at 133 including thecam-operated switches CS1, CS2, CS3, CS4. Thus, when any of theseswitches is closed, the respective motor is energized. Normally, theactuating arm of each cam-operated switch is in notch 73 of therespective cam 71, and the switch is open. Switches LS, MS and HS haveone terminal connected by a line 135 to power line L2 and lines 137, 139and 141 extending from their other terminals. Line 137 may be referredto as a low-price line, line 139 as a medium-price line, and line 141 asa high-price line. Each of switches PS1 and PS4 is shown as having itsblade 105 connected to the low-price line 137 whereby these controlvending of lowprice items from the respective shelves. Switch PS2 isshown as having its blade 105 connected to the mediumprice line 139 andswitch PS3 is shown as having its blade 105 connected to the high-priceline 141 whereby these switches respectively control vending of mediumand high-price items from the respective shelves. Lines 143 connectcontacts 109 of the push button switches to the blades 127 of the emptyswitches. A line 145 connects contacts 129 of the empty switches to oneterminal of solenoid 121, and a line 147 connects the other terminal ofthis solenoid to one terminal of switch 101. A line 149 connects theother terminal of switch 101 to power line L1. Contacts 131 of the emptyswitches are connect ed to power line L1 by a line 151 including anempty lamp 153. Switch 119 is connected in a line 155 shown as extendingfrom line 135, hence connected to power line L2. Motors M1, M2, etc. areconnected across line 155 and power line L1 in lines such as indicatedat 157, the circuitry being such that, with switch 119 closed, pushingin any of push-button switches PS1, PS2, etc. energizes the respectivemotor M1, M2, etc. Motor 89 is connected across lines 149 and 155, henceacross lines L1 and L2, by a line 157 connected to line 155 andincluding switch 117 and a line 158 connected to line 149. Switch isconnected across lines and in a line 159. Solenoid 103 is connected in aline 161 between power line L1 and one terminal of switch 97. A line 163connects this terminal of switch 97 and line 157. A line 165 connectsthe other terminal of switch 97 and line L2.

Operation is as follows:

For loading, the front door 13 of the cabinet is opened, and latchmembers 49 are released to allow the shelves 17 to swing down to loadingposition (see FIG. 5). Items may then be placed between the convolutionsof the helix 21 of the top shelf, access being provided to the topthereof since the shelf is inclined downward toward the front of thecabinet. After the top shelf is loaded, it is swung up and latched inits generally horizontal vending position. This provides for access tothe second shelf from the top for loading thereof, after which thesecond shelf is swung up and latched in vending position, therebyproviding for access to the third shelf from the top for loadingthereof, and so on. The shelves, when in vending position, lie one aboveanother with a minimum of space therebetween for maximum utilization ofspace in the cabinet (see FIG. 2). The spacing of the shelves will bedetermined by the width of the items (candy bars, packages of candy orthe like) to be vended, and may be varied by pivoting the hinge pins 29of the shelves in various pairs of the holes 27 in the angle irons 25.The teeth 47 on channel members 41 take care of latching the shelves invending position regardless of the heightwise adjustment of the shelves.

Assuming a purchaser has deposited a sufiicient amount in coin forpurchase of a low-price item, switch LS will be closed. Then thepurchaser pushes in switch PS1 (for example) for vending a low-priceitem from the shelf which carries motor M1 controlled by switch PS1.Assuming blade 127 of empty switch BS1 is closed on contact 129 (as itis as long as there are items in stock on the respective shelf),solenoid 121 is energized via line 149, switch 101 (which is closed atthis time), line 147, the coil of solenoid 121, line 145, switch 1351,the respective line 143, switch PS1 (now closed) line 137, switch LS(now closed) and line 135. Switches 115, 117 and 119 thereupon close,and solenoid 121 also latches in push-button switch PS1. Upon closure ofswitch 115, a holding circuit is established for solenoid 121 via line149, switch 101 (which is closed at this time), line 147, the solenoid121, part of line 145, switch 115, line 159, line 155 and part of line135. Upon closure of switch 117, motor 89 is energized via line 149,line 158, line 157, switch 117, line 155 and part of line 135. Solenoid103 is energized via line 161, line 163, line 157, switch 117, line 155and part of line 135. Solenoid 103 thereupon opens switch LS. Uponclosure of switch 119, motor M1 is energized via line 155 and therespective line 157 (PS1 being closed).

With motor M1 in operation, the respective helix 21 is rotated to feeditems forward along the respective shelf. The respective cam 71 isrotated and switch CS1 closes.

The motor M1 is thereupon energized via the respective line 133.Meanwhile, motor 89 is operating to rotate cam 91. This closes switch 97to establish a holding circuit for motor 89 via lines 149, 158, 157,1163, switch 97 and line 165. Ultimately, notch 93 in cam 91 comesaround to arm 99 of switch 101 and the latter opens. This deenergizessolenoid 121, and switches 115, 117 and 119 open, and push-button switchPS1 is released to open. Upon opening of Switch 117, solenoid 103 isdeenergized. Then notch 93 in cam 91 comes around to arm 95 of switch 97and the latter opens. This deenergizes motor 89 at the completion of asingle revolution of cam 91. Motor M1 continues to operate until cam 71completes a revolution and the actuating arm 75 of switch CS1 drops intonotch 73.

As a result of the above, the helix 21 driven by motor M1 is rotatedthrough a single revolution. All items on the respective shelf arethereby fed forward along the shelf a distance corresponding to thepitch of the convolutions of the helix, and the end item is fed off thedischarge end of the shelf and drops down through the space 77 to thepan 81, on which it is accessible to the purchaser through accessopening 83 in door 13. As noted above, cam 91 is driven faster than cam71. Thus cam 91 completes its revolution before cam 71.

Assuming a purchaser has deposited a suiiicient amount in coin forpurchase of a medium-price item, switches LS and MS will be closed. Thenthe purchaser pushes in switch PS2 for vending a medium-price item fromthe shelf which carries motor M2. controlled by switch PS2. The vendcycle is then carried out substantially the same as above described,noting that solenoid 121 is energized via line 149, switch 101, line147, line 1 25, switch BS2,

the respective line 143, and line 139 (including switch MS).

Assuming a purchaser has deposited a sufficient amount in coin forpurchase of a high-price item, switches 118, MS and HS will be closed.Then the purchaser pushes in switch PS3 for vending a high-price itemfrom the shelf which carries motor M3 controlled by switch PS3. The vendcycle is then carried out substantially as above described, noting thatsolenoid 121 is energized via -line 149, switch 101, line 147, line14-5, switch E83, the respective line 143, and line 141 (includingswitch HS).

It will be observed that, as to any shelf, loading is inherently carriedout in such manner that any items which may remain on the shelf fromprevious servicing will be the first to be vended. This is because itemsloaded on a shelf are fed toward the discharge end of the shelf on eachvend cycle, leaving empty spaces between convolutions of the helixtrailing whatever items may remain on the shelf, and the serviceman willsimply load up these empty spaces. Accordingly, the machine operates onthe first-in, first-out principle.

In view of the above, it will be seen that the several objects of theinvention are achieved and other advantageous results attained.

As various changes could be made in the above constructions withoutdeparting from the scope of the invention, it is intended that allmatter contained in the above description or shown in the accompanyingdrawings shall be interpreted as illustrative and not in a limitingsense.

We claim:

1. A vending machine comprising a cabinet having a door, a plurality ofshelves in the cabinet, each shelf having a trough extending lengthwisethereof and carrying a helix extending lengthwise in the trough, thehelix projecting up out of the trough whereby items to be vended may beplaced between the convolutions of the helix with end portions of theitems resting on the shelf at opposite sides of the trough, said helix,upon rotation thereof in one direction, being adapted to feed said itemsin the direction toward one end of the shelf constituting a dischargeend of the shelf, and said helix extending to said discharge end of theshelf so that it is adapted to feed items one-byone off said dischargeend of the shelf, means carried by each shelf at the other end of therespective helix for rotating the respective helix in said onedirection, and means individually mounting said shelves in the cabinetfor movement between an inaccessible vending position and a positionseparately exposing each helix for individual loading, said shelves whenin vending position extending horizontally in the cabinet one aboveanother from near one side of the cabinet to near the other side of thecabinet with the discharge ends of the shelves sufficiently spaced fromthe adjacent side of the cabinet to provide a space through which itemsdischarged from the shelves may drop, and each shelf when in loadingposition, and with the door of the cabinet open, being accessible fromthe top thereof for placing items thereon between the convolutions ofthe helix on the shelf.

2. A vending machine as set forth in claim 1 wherein said means mountingthe shelves in the cabinet provides for adjustment of the shelvesheightwise to different positions in the cabinet.

3. A vending machine as set forth in claim 1 wherein the means forrotating each helix comprises an electric motor carried by therespective shelf and a speed reducer carried by the respective shelfdriven by the motor and having an output shaft connected to said otherend of the helix.

4. A vending machine as set forth in claim 3 wherein the motors areconnected in a circuit including coin-controlled means andpurchaser-operable switches, one for each motor, adapted on insertion ofappropriate amount in coin and actuation of any switch to energize therespective motor to rotate the respective helix in item-feedingdirection until an item has been fed off the discharge end of therespective shelf and then to deenergize the motor.

5. A vending machine as set forth in claim 4 wherein said circuitincludes switches actuable by cams driven by the motors for deenergizingeach motor in response to completion of a single revolution of therespective helix.

6. A vending machine as set forth in claim 1 wherein each shelf carriesguides on opposite sides of the respective helix for confinement ofitems endwise of the items while permitting said items to slide towardthe discharge end of the shelf.

7. A vending machine as set forth in claim 6 wherein said guides on eachshelf are adjustable toward and away from the respective helix forendwise confinement of items of different length.

8. A vending machine comprising a cabinet having a bottom, sides, a top,a rear and a front door, a plurality of shelves in the cabinet extendingacross the cabinet from near one side to near the other side, meansindividually mounting each shelf for swinging movement on a horizontalpivotal axis at the rear of the shelf and at the rear of the cabinetfrom a generally horizontal and inaccessible vending position in thecabinet to a loading position inclined downward toward the front of thecabinet, for separately exposing each shelf for individual loading,means for releasably holding each shelf in its generally horizontalvending position, each shelf having a trough extending lengthwisethereof and transversely of the cabinet and carrying a helix extendinglengthwise-in the trough, the helix projecting up out of the troughwhereby items to be vended may be placed between the convolutions of thehelix with end portions of the items resting on the shelf at oppositesides of the trough, said helix, upon rotation thereof in one direction,being adapted to feed said items in the direction toward one end of theshelf constituting a discharge end of the shelf, and said helixextending to said discharge end of the shelf so that it is adapted tofeed items one-by-one off said discharge end of the shelf, means carriedby each shelf at the other end of the respective helix for rotating therespective helix in said one direction, said shelves when swung up tovending position extending generally horizontally across the cabinet oneabove another, the discharge ends of the shelves being sufficientlyspaced from the adjacent side of the cabinet to provide a space throughwhich items discharged from the shelves may drop, and each shelf whenswung down to loading position, and with the front door of the cabinetopen, being accessible from the top thereof for placing items thereonbetween the convolutions of the helix on the shelf.

9. A vending machine as set forth in claim 8 wherein the pivotal axis ofeach shelf is adjustable heightwise to different positions in thecabinet, and wherein the means for releasably holding each shelf in itsgenerally horizontal vending position is adapted to hold the shelf insaid vending position for any position of adjustment of the shelf.

10. A vending machine as set forth in claim 8 wherein the means forrotating each helix comprises an electric motor carried by therespective shelf and a speed reducer carried by the respective shelfdriven by the motor and having an output shaft connected to said otherend of the helix.

11. A vending machine as set forth in claim 10 wherein the motors areconnected in a circuit including coin-controlled means andpurchaser-operable switches, one for each motor, adapted on insertion ofappropriate amount in coin and actuation of any switch to energize therespective motor to rotate the respective helix in item-feedingdirection until an item has been fed off the discharge and of therespective shelf and then to deenergize the motor.

12. A vending machine as set forth in claim 11 wherein said circuitincludes switches actuable by cams driven by the motors for deenergizingeach motor in response to completion of a single revolution of therespective helix.

13. A vending machine as set forth in claim 8 wherein each shelf carriesguides on opposite sides of the respective helix for confinement ofitems endwise of the items while permitting said items to slide towardthe discharge end of the shelf.

14. A vending machine as set forth in claim 13 wherein said guides oneach shelf are adjustable toward and away from the respective helix forendwise confinement of items of different length.

15. Vending apparatus comprising a cabinet having a. door, a pluralityof shelves in the cabinet, each shelf having lateral portions onopposite sides of a space extending lengthwise of the shelf, a helixextending lengthwise of each shelf in the space between said lateralportions of the shelf, means associated with each shelf located belowsaid space supporting the respective helix with part of the helix belowsaid lateral portions of the shelf and part of the helix projecting upabove said lateral portions, said means supporting said helix forrotation on the axis of the helix, whereby items to be vended may beplaced on each shelf between the convolutions of the respective helix,each helix extending to one end of its respective shelf constituting adischarge end of the shelf and being adapted on rotation thereof in onedirection to push the items toward said discharge end and feed themone-by-one off said discharge end, means in said cabinet mounting saidshelves for individual movement between an inaccessible vending positionand a position separately exposing each shelf for individual loading,said shelves in vending position extending substantially horizontallyone above another in the cabinet in the same direction, said cabinethaving a space at the discharge ends of the shelves through which itemsdischarged from the shelves including any shelf above the lowermostshelf may drop to a position for removal by a purchaser, means at theother ends of the shelves for rotating the helices in said onedirection, said shelves when in loading position, and with the door ofthe cabinet open, providing for loading of each shelf with items byplacing items on the top of each shelf between the convolutions of therespective helix.

References Cited in the file of this patent UNITED STATES PATENTS2,918,195 Frerk Dec. 22, 1959

1. A VENDING MACHINE COMPRISING A CABINET HAVING A DOOR, A PLURALITY OFSHELVES IN THE CABINET, EACH SHELF HAVING A TROUGH EXTENDING LENGTHWISETHEREOF AND CARRYING A HELIX EXTENDING LENGTHWISE IN THE TROUGH, THEHELIX PROJECTING UP OUT OF THE TROUGH WHEREBY ITEMS TO BE VENDED MAY BEPLACED BETWEEN THE CONVOLUTIONS OF THE HELIX WITH END PORTIONS OF THEITEMS RESTING ON THE SHELF AT OPPOSITE SIDES OF THE TROUGH, SAID HELIX,UPON ROTATION THEREOF IN ONE DIRECTION, BEING ADAPTED TO FEED SAID ITEMSIN THE DIRECTION TOWARD ONE END OF THE SHELF CONSTITUTING A DISCHARGEEND OF THE SHELF, AND SAID HELIX EXTENDING TO SAID DISCHARGE END OF THESHELF SO THAT IT IS ADAPTED TO FEED ITEMS ONE-BYONE OFF SAID DISCHARGEEND OF THE SHELF, MEANS CARRIED BY EACH SHELF AT THE OTHER END OF THERESPECTIVE HELIX FOR ROTATING THE RESPECTIVE HELIX IN SAID ONEDIRECTION, AND MEANS INDIVIDUALLY MOUNTING SAID SHELVES IN THE CABINETFOR MOVEMENT BETWEEN AN INACCESSIBLE VENDING POSITION AND A POSITIONSEPARATELY EXPOSING EACH HELIX FOR INDIVID-